Addition of detection of fedora distrubition

[BoolPurist]

Feature I want

I want to detect if my rust program is running on fedora.

Current State

When I run a program with this code

use os_type;
fn main() {
    println!("{:?}", os_type::current_platform());
}

Then I get this output:

OSInformation { os_type: Unknown, version: "0.0.0" }

What I want

OSInformation { os_type: Fedora, version: "0.0.0" }

---

I would like to implement this feature. However I am concerned how to do this.

1. Approach for the implementation

I add a new Variant like Fedora to the public enum OSType.
However adding a new variant to a public enum would introduce a breaking change for rust could which does not handle the
"catch match everything" aka

_ => {...}

With my approach I would need to bump up the major version according to semantic versioning.

2. Approach for the implementation

Another way could be, that I introduce the attribute non_exhaustive on the enum OSType. In this manner it would not break the relying code rust. Then I would only bump up the minor version.

Which approach would be acceptable ? I personally prefer the 2. Approach.